Simple puzzle with a ring

prusaprinters

<p>I rembered making a puzzle as a project with friends in high school (more than 20 years ago), but was not able to find any informations on it (pictures, blue print, …), so I decided to do it from scratch from what I remembered we did on our milling and lathe and this is the result.</p><p>For the puzzle, you need to print 1 body, 1 ring, 2 cylinders and 2 discs. Only the body need support. In my case, I prefer to print each kind in  different color. You will also need 30 cm of some string. In this case I used braided nylon cord like this one <a href="https://www.amazon.com/AXLIZER-Braided-Lifting-Aluminum-Projects/dp/B095JL8XNC/.">https://www.amazon.com/AXLIZER-Braided-Lifting-Aluminum-Projects/dp/B095JL8XNC/.</a> I advise you to use a 2mm diameter cord since the holes are 3mm. If you go for the braided nylon cord, you will need a lighter to burn the tip a bit.</p><p>The assembly goes like this :</p><ol><li>slip the string through the hole of one disc and make a knot (or more if it is a low diameter string). This way, the disc can not esacpe from the string.</li><li>now put a cylinder</li><li>and now the body with the ring already on it (it's cheating to let the ring already outside :p)</li><li>another cylinder</li><li>the last disc and make another knot. The all should be keep on the string by the knots</li></ol><p>Now you can play and try to get the ring outside of the puzzle !</p><p> </p><p>I think you can use it to present with a real ring if you scale it properly, but that could be a little mean :p</p>